Notes:Though this story lists Zygons among its characters, the word "Zygon" never appears, nor do Zygons exist in their natural form. However, had the Radio Times run been allowed its original 60-issue run, the beings who captured M'rek'd (the carnival owner) would have been revealed to be Zygons. Zygons, fans of Doctor Who will know, have an ability to shape-shift.